Dodge 2009 Challenger - Manual (Page 169)

the key is in the ON position before engine start. If the
MIL does not come on when turning the key from LOCK
to ON, have the condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc., may illuminate the MIL after
engine start. The vehicle should be serviced if the MIL
stays on through several of your typical driving cycles. In
most situations, the vehicle will drive normally and will
not require towing.
The MIL flashes to alert you to serious conditions that
could lead to immediate loss of power or severe catalytic
converter damage. The vehicle should be serviced as
soon as possible if this occurs.
26. Door Ajar Indicator
This light will turn on to indicate that one or more door
may be ajar.
27. Decklid Ajar Indicator
This light will turn on to indicate that the decklid may be
ajar.
28. Windshield Washer Fluid Low Indicator
This light will turn on to indicate the windshield washer
fluid is low. 4
UNDERSTANDING YOUR INSTRUMENT PANEL 167